Liquid Crystal of Ethyl and Propyl Aromatic Aldehyde with Azo Core and Photosensitivity in Mesophase
作者:Yong-Sheng Wei、Min-Yan Zheng、Wei Geng、Shan Wang、Yong-Hui Shang
DOI:10.14233/ajchem.2015.18367
日期:——
Eight new stable rod-like aromatic aldehyde liquid crystalline molecules with azo bridge have been prepared, in which single or double six-membered carbon ring carboxylic acid mesogenic cores with shorter alkyl chain of ethyl, n-propyl were condensed with hydroxyl azo benzaldehyde. These compounds have been characterized by their spectral data, DSC and HS-POM. These molecules were expected to exhibit liquid crystal phase so that the influence of UV-light on their textures of mesophase could be detected. The results showed that all these target compounds have the temperature range of mesophase between 101 and 145 °C. After irradiating under UV-light, they exihibited photo-sensitivity not only in methanol but also in mesophase.
我们制备了八种新的稳定的偶氮桥杆状芳香醛液晶分子,其中单或双六元碳环羧酸中原核具有较短的乙基、正丙基烷基链,并与羟基偶氮苯甲醛缩合。通过光谱数据、DSC 和 HS-POM 对这些化合物进行了表征。预计这些分子会呈现液晶相,因此可以检测紫外光对它们介相质地的影响。结果表明,所有这些目标化合物的介相温度范围都在 101 至 145 ℃ 之间。在紫外线照射下,它们不仅在甲醇中,而且在介相中都表现出光敏感性。